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3 years ago

13

Fusion and fission are both processes that involve which fundamental force? to ask? A. gravitational B. weak nuclear C. electrom

agnetic D. strong nuclear

1 answer:

marin [14]3 years ago

5 0

Fusion & Fission are both processes that involve D. Strong Nuclear Fundamental forces
"D". is the answer

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Volcanic eruption affects water drainage but what may that result in

dmitriy555 [2]

Explosive eruptions can severely disturb landscapes downwind or downstream of volcanoes by damaging vegetation and depositing large volumes of erodible fragmental material. As a result, fluxes of water and sediment in affected drainage basins can increase dramatically.

6 0

3 years ago

A 4.00 kg ball is swung in a circle on the edge of a 1.50 m rope. The time it takes for the ball to complete one rotation is 3.4

lorasvet [3.4K]

Answer:

The answer is below

Explanation:

The length of the rope is equal to the radius of the circle formed by the complete rotation of the rope. Therefore the radius = 1.50 m.

a) The distance covered by the rope when completing one rotation is the same as the perimeter of the circle. Hence:

Distance covered in one rotation = 2π * radius = 2π * 1.5 = 3π meters

The velocity of the ball = Distance / time = 3π meters / 3.4 seconds = 2.77 m/s

b) The initial velocity (u) is 0 m/s, the final velocity is 2.77 m/s during time (t) = 3.4 s. Hence acceleration (a):

v = u + at

2.77 = 3.4a

a = 0.82 m/s²

c) Force on ball = mass * acceleration = 4 * 0.82 = 3.28 N

8 0

3 years ago

Which is an electron dot diagram of an ionic compound

Helga [31]

I think the answer is (D)

3 0

2 years ago

Read 2 more answers

A wheel of moment of inertia of 5.00 kg∙m2 starts from rest and accelerates under a constant torque of 3.00 N∙m for 8.00 s. What

Strike441 [17]

Answer:

The wheel's rotational kinetic energy is 57.6 J.

Explanation:

Given that,

Moment of inertia = 5.00 kg.m²

Torque = 3.00 N.m

Time = 8.00 s

We need to calculate the angular acceleration

Using formula of the torque act on the wheel

$\tau=I\alpha$

$\alpha=\dfrac{\tau}{I}$

Where, I = moment of inertia

$\alpha$ = angular acceleration

$\tau$ = torque

Put the value into the formula

$\alpha=\dfrac{3.00}{5.00}$

$\alpha=0.6\ rad/s^2$

We need to calculate the final angular velocity

Initially wheel at rest so initial velocity is zero.

Using formula of angular velocity

$\alpha=\dfrac{\omega_{f}-\omega_{i}}{t}$

$\omega_{f}=\omega_{i}+\alpha t$

Put the value into the formula

$\omega_{f}=0+0.6\times8.00$

$\omega_{f}=4.8\ rad/s$

We need to calculate the rotational kinetic energy of the wheel

Using formula of the rotational kinetic energy

$K.E_{rot}=\dfrac{1}{2}I\omega^2$

$K.E_{rot}=\dfrac{1}{2}\times5.00\times(4.8)^2$

$K.E_{rot}=57.6\ J$

Hence, The wheel's rotational kinetic energy is 57.6 J.

6 0

3 years ago

Chan Hee is inflating a basketball using an air pump. He notices that the pump gets warm as he uses it. What is a good hypothesi

Paraphin [41]

Answer:

If air in a pump is squeezed more, then the air gets hotter because energy is added to it.

Explanation:

A hypothesis is a simple scientific guess that can be investigated. It usually adopts the if -then and because approach to relate variables to the expect output.

The most fitting statement of hypothesis that can be investigated is that "If air in a pump is squeezed more, then the air gets hotter because energy is added to it".

We can find the volume of the air, the pressure of the pump and temperature and discern their relationships.

Based on the kinetic theory, pressure causes increasing collisions between particles and hereby, a gas will be hotter.

3 0

2 years ago

Read 2 more answers